Modeling of impurity transport in the divertor of JET

Andreas Kirschner, Dmitry Matveev, Mathias Groth, Sebastijan Brezinsek, Vladislav Kotov, Karl Krieger, Dmitry Borodin, Carolina Björkas, Markus Airila, Hans G. Esser, Gennady Sergienko, Ulrich Samm, The EFDA-JET Contributors

    Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review


    Deposition/erosion measurements by means of a Quartz Micro Balance (QMB) located below the Load Bearing Septum Replacement Plate in the private flux region of the inner divertor of JET (with full carbon wall) revealed net deposition with the inner strike point located on the vertical tile and net erosion with the inner strike point on the horizontal tile [H.G. Esser et al., J. Nucl. Mater. 390–391, 148 (2009)]. ERO calculations show about 3.5 times larger flux entering the QMB aperture when the inner strike point is located on the vertical plate compared to the case when strike point is on the horizontal plate – thus indicating similar behavior. Using these fluxes from ERO as input, detailed modeling of erosion/deposition at the QMB itself considering the realistic geometry of the QMB housing has been performed with the 3D-GAPS code. The QMB measurements can be reproduced with combined ERO/3D-GAPS modeling if erosion due to deuterium atoms within the QMB housing is taken into account.
    Original languageEnglish
    Article number2402038
    JournalPlasma and Fusion Research
    Publication statusPublished - 2013
    MoE publication typeA4 Article in a conference publication
    Event22nd International Toki Conference "Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas" - Toki, Japan
    Duration: 19 Nov 201222 Nov 2012


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